» New movie, “B10-7218 Comparison of the radiation intensity caused by two types of Crookes tube ” is uploaded!

New movie, “B10-7218 Comparison of the radiation intensity caused by two types of Crookes tube ” is uploaded!

When electron beam is emitted inside a Crookes tube, radiation is always released outside. This is why teachers have to control the demonstration duration for human safety reason. Its radiation intensity depends on the conditions such as emitting voltage and other factors. In comparing hot and cold cathode emission, cold cathode type releases more radiation than hot cathode type generally.

Narika have two types of cold cathode types. One is traditional tube and the other is the latest cold cathode Crookes tube. In fact, Narika measured and compared the radiation intensity of Narika normal and latest Crookes tube. It turned out the normal Crookes tube released 15.6 micro Sv/h, while the latest one released 0.07 micro Sv/h.